300 Inch Chrysler Hemi

[Troy Cagle]

Could someone please let me know who remembers what to do to build one for Fuel, idle only, cacklefest deal?.
I've got a very nice WE55 3-5/8" block, crank and cherry 354 heads. I realize alum. rods wont go in from the top & thats not a problem.
Thanks for your time & help,,,,and again, this is not for racing or will it be leaned on.
Troy

[Freud]

Related to Gary Cagle?  He was 300 incher for a long time.

FREUD

[jdincau]

It's been a long time (1968) but a couple of things I remember are; grinding reliefs (or chamfering the bore) to clear the valves, replacing the stock oil pump pickup with a Milodon or Donavan piece and putting a vented plug (also Milodon or Donavan) in the oil passage in the block at the pump output to convert to full flow oiling. If you are referring to the tuneup, I haven't the foggiest.

[SPARKY]

Removed by me because I posted before checking my Senior memory  or my early Chrysler facts.

[Freud]

If crowd entertainment is the goal flames out the exhausts are required. That's tune up related.

It matters not which block you use. A blowup will drew uncontrolled crowd reaction.

That way a block that could be a racer wouldn't be sacrificed.

FREUD

[RichFox]

Kind of my feelings. You have a '55 Windsor block, I guess. Or you could sleeve a 331 to the 300 size. Or destroke it using a Pontiac crank like I said before. But if it's just to lite the candles, burn some Pop, and make noise, Why not just take the easy way out and use a 331? Sell the 300 parts to some racer who needs a D motor.

[Troy Cagle]

Because I want it to be as accurate as possible,,unlike the completely fake one that's already out there with a 392, & other stuff that's all wrong.

My dad used to pull a head and let anyone measure stuff if they wanted--I want to be able to do that while I'm sitting around.
Again,,authentic.

And yes, it's a '55 Windsor block, & I'm aware of notching/relieving the top & bottom of the deck/cylinder wall.Taking the crank to Henry next week. I'm not going to give up on trying to do this car.
I've got the right pump, the right mag, and the only thing I'm really lacking is a 2-port Hilborn and Delta front cover. I'm working with someone to do the car itself.

I get it that this is an LSR web page, sorry, I'll move along.
Thank you.

Edit---wow factor, flames & ground pounding are not my goal  --the thing really didn't do that. (Like some of the other ones with 12 foot flames, glowing pipes etc that never did that as well)

[salt27]

No need to move along, you're breaking the boredom.

Do you have any pictures to show us?

[jdincau]

And I seem to remember the cams were different 331 vs 300/354 vs 392. We used stock forged rods, shot peened but that was a blown gas motor. I think the fuel guys used Don's boxed stockers.

[SPARKY]

Al Eshenbaugh's  D/FL #36 that just started running this combination.  He has late model heads but he is running the  Windsor block---

[panic]

The tappet bank angle is different between low-deck and high-deck Chrysler Gen-1 hemi/poly engines, there are 6 different cams as to OAL and lobe placement (in addition to different grinds) and each is unique. There are also different nose drive methods.
Dodge 241, 260 (a.k.a. 259), 270: 65 degrees
Dodge 315, 325: 58 degrees
DeSoto 276, 291: 64 degrees
DeSoto 330, 341, 345: 60 degrees
Chrysler 301, 331, 354: 61.5 degrees
Chrysler 392: 59 degrees

[SPARKY]

Rich that crank must have been Pontiac's 1969 303 displacement ---that was not a factory production option---Trans Am Racing eng crank that had a 2.84 stroke that produced 303 displacement.

[Stan Back]

I'm with Rich.  Grind and fill the ID #, let them worry about the displacement.  When was the last time they checked displacement at a cackle-fest?

[RichFox]

i am no math wiz. But when I put the stock 331 bore of 3.815 with the 55-56 pontiac's stroke of 3.250 I get 296.73 cid. a .040 clean up bore comes out to 303 inches. Correct?

[SPARKY]

    your math beats my math lol   

the 326 crank would be much easier to come by 

I keep trying to get there with the "killer" LS heads